Age of Licking Narrows 
177 
one. A detailed description of this feature in valley A will be 
typical of all three. Here the terrace is so persistent that it is 
impossible to climb from the stream bed to either divide without 
j crossing it. It has a down stream slope of six or eight feet to the 
I mile, but, as the gradient of the stream is several times as great, 
the top of the terrace is only fifteen feet above the bed of the brook 
, at the south, while it is thirty-five feet above it at the northern 
I end. The terrace is also slightly higher on the west than on the 
Fig. I. Map of the Licking Narrows area. From the Newark and Frazeysburg 
Quadrangles, advance sheets, U. S. Geological Survey. 
I east; the combination of these two gradients is such that the low- 
I est point in the terrace is just as high as the loNvest point in the 
' valley wall, at K, 
I The terrace is composed of fine sands, clays, and gravels, and 
I varies in its composition in different places. At its northern end 
i a gully cut in it reveals a section consisting of clay interbedded 
I with fine loess-like sands. These sands are entirely free of gravels 
and have no distinct stratification or lamination. The clay beds 
are from two inches to nearly a foot in thickness and some of them 
